text: #include "binary_trees.h"
  /**
   * binary_tree_size - function that return the size of a tree
   * @tree: tree to check
   * Return: size of tree
   */
  size_t binary_tree_size(const binary_tree_t *tree)
  {
  	size_t size = 0, r = 0, l = 0;
  
  	if (tree == NULL)
  	{
  		return (0);
  	}
  	else
  	{
  		l = binary_tree_size(tree->left);
  		r = binary_tree_size(tree->right);
  		size = r + l + 1;
  	}
  	return (size);
  }
  